Ancient Greek water reservoirs in the underground beneath Naples, Campania, Italy, Europe

photography colour colour image color color image horizontal horizontal image indoors inside background people incidental people people in the background tourist tourists holiday maker holiday makers on holiday tourist destination tourism travel travel destination travel destinations ancient greek water reservoir underground naples campania italy italian europe european building exterior building buildings building interior building interiors interior interiors architecture architectural antiquity greek civilization ancient ancient rome stone illuminated lit lit up water surface